Since the Big Foot does not have a jumper setting for "slave" you will have to use "cable select" on both drives. If Big Foot does not have a jumper setting for "cable select", it could be that it will only work as a master. In that case install it on the IDE secondary channel as a master with the other drive, if any, on that channel set as slave. Tom Mayer ----- Original Message ----- From: "Jim Cooley" <[log in to unmask]> The C: drive on my IBM Aptiva with Windows 98 SE was a Quantum Big Foot. I installed a Seagate Barracuda 100 GB Ultra AT/100 according to instructions, intending to make the new Barracuda C: (master) and the old Big Foot D: (slave). I set the jumpers.(Big Foot has no jumper for slave). The installation went well. Everything runs fine from the new disk. However, it does not recognize the slave, i.e. the old Big Foot. I replaced the Big Foot with another drive, as slave and it worked fine. I tried it with another HD and it worked. I reinstalled the Big Foot and it still does not work. I would appreciate any suggestions. The NOSPIN Group has added a new feature on our website, web based bulletinboard for questions and answers: Visit our sister website at http://nospin.com